JP2008144308A - Woven belt and seat belt device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve abrasion resistance in a woven belt and a seat belt device using the woven belt. <P>SOLUTION: The woven belt 101 is composed by weaving warp yarns 102 extendedly arranged in a substantially longitudinal direction of a webbing and weft yarns 103 extendedly arranged in a substantially width direction of the webbing. At least one of the warp yarns 102 and the weft yarns 103 is formed into a fiber bundle containing medium shrinking type synthetic fiber yarns (e.g. containing a low-melting point filament component 306 having a relatively low melting point and a high-melting point filament component 307 having a relatively high melting point). Thus, the strength of the fiber bundle can be improved and the abrasion resistance of the whole woven belt 101 can be improved. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a woven belt woven in a belt shape with a plurality of substantially perpendicular fiber bundles, and more particularly to a woven belt having high load resistance and a seat belt device using the woven belt as a webbing.

  2. Description of the Related Art Conventionally, weaving belts made of high-strength fibers are often used as belts for restraining heavy objects or bringing together a plurality of materials. One well-known use example of such a woven belt is a webbing of a seat belt device for restraining a passenger's body in a seat such as a vehicle.

In addition to the basic performance such as load resistance that can restrain the passenger's body in the event of a vehicle collision, the seat belt device webbing is not only comfortable, but also pullable from the retractor, which is a webbing take-up device. Various performances in consideration of the above are required. For this reason, various techniques for improving the fibers used in the weaving belt and the weaving configuration thereof have been proposed (see, for example, Patent Document 1).
JP 2004-315984 A

  Due to the nature of the woven belt, the woven belt is usually not used for temporary use but is used repeatedly. For example, in the above example of the seat belt device, it is attached when the occupant gets on and is removed when the passenger gets off, and when it is used for material transportation or heavy load, it is removed after it is used for restraining or organizing the object, Reattached when in use.

  In this way, it is desirable that the weaving belt has as much wear resistance as possible due to the nature of repeated loading and unloading and the application of great tension during use.

  The objective of this invention is providing the woven belt which can aim at the improvement of abrasion resistance, and a seatbelt apparatus using the same.

  In order to achieve the above object, a first invention is a woven belt constituted by weaving a first fiber bundle extending in a substantially webbing longitudinal direction and a second fiber bundle extending in a webbing substantially width direction. And at least one of the first fiber bundle and the second fiber bundle is a fiber bundle containing a middle shrinkage type synthetic fiber yarn having a dimensional shrinkage ratio of 15% or more and 20% or less after shrinkage with respect to the shrinkage. It is.

  When the first fiber bundle or the second fiber bundle is composed of a medium shrinkage type synthetic fiber yarn having a higher shrinkage rate when heated than a normal synthetic fiber yarn, it is melted by heat treatment and welded to the surrounding fiber bundle. Since it is strongly bonded, the strength is improved. As a result, the wear resistance can be improved. Further, by setting the dimensional shrinkage ratio after shrinkage of the high shrinkage synthetic fiber yarn before shrinkage to 15% or more and 20% or less, the welding action during shrinkage by heat treatment is promoted and the strength of the entire fiber bundle can be improved. it can. In addition, by keeping the shrinkage rate low, the yarn is less likely to shrink even when placed in a high temperature environment (the property of the yarn is less likely to change), thereby improving transportability during transportation.

  According to a second invention, in the first invention, the first fiber bundle is a fiber bundle containing a normal synthetic fiber yarn, and the second fiber bundle is a fiber bundle containing a medium contraction type synthetic fiber yarn.

  While the first fiber bundle is a fiber bundle of a normal synthetic fiber yarn, the strength of the fiber bundle can be increased by using a medium contraction type synthetic fiber yarn for the second fiber bundle. Thus, the strength can be improved and the wear resistance can be improved.

  According to a third invention, in any one of the first and second inventions, the intermediate shrinkage type synthetic fiber yarn includes a low melting point filament component having a relatively low melting point and a high melting point filament component having a relatively high melting point. It is characterized by having.

  By performing the heat treatment, the low melting point filament is locally melted, for example, so that a large welding action can be surely obtained.

  A fourth invention is characterized in that, in the above-mentioned third invention, the medium-shrink type synthetic fiber yarn has the low-melting filament component dispersed in the high-melting filament component.

  By performing the heat treatment, the low melting filaments arranged in a dispersed manner can be melted and reliably welded to the surrounding yarn.

  According to a fifth invention, in the third or fourth invention, the high melting point filament component has a melting point of 250 ° C. or higher and 260 ° C. or lower, and the low melting point filament component has a melting point of 160 ° C. or higher and lower than 250 ° C. Features.

  Thus, for example, by curing at a temperature of 200 ° C. to 230 ° C. for 90 seconds to 180 seconds, the low melting filament can be melted without impairing the strength of the high melting filament component.

  In a sixth aspect of the present invention, in any one of the first to fifth aspects, the number of driving per inch of the other fiber bundle with respect to one of the first fiber bundle or the second fiber bundle is 20 or less. It is what.

  By reducing the number of driven fiber bundles to 20 or less, the meandering shape when weaving the other fiber bundle to be woven is loosened and the stress concentration in the curved portion is relaxed. Can also improve the strength.

  In a seventh aspect of the present invention, in any one of the first to sixth aspects, at least one of the first fiber bundle and the second fiber bundle is a fiber bundle provided with entanglement using untwisted yarn. .

  When the first fiber bundle or the second fiber bundle includes the middle shrinkage type synthetic fiber yarn and further includes entanglement, the strength and wear resistance can be improved without using the twisted yarn. it can. Therefore, the manufacturing cost can be reduced.

  According to an eighth aspect of the present invention, there is provided a weaving belt for restraining a passenger, a winding device capable of winding the weaving belt, a buckle connected to a fixed member, a tongue provided on the weaving belt and engaged with the buckle. The weaving belt is configured by weaving a first fiber bundle extending in the substantially longitudinal direction of the webbing and a second fiber bundle extending in the substantially width direction of the webbing, and the first fiber bundle and At least one of the second fiber bundles is a fiber bundle containing a medium contraction type synthetic fiber yarn.

  In the seat belt device of the eighth invention of the present application, the first fiber bundle or the second fiber bundle of the woven belt is constituted by using the medium shrink type synthetic fiber yarn having the characteristic of being welded by heating, and the heat treatment is performed. As a result, it is melted and welded to the surrounding fiber bundle to bond strongly, so that the strength is improved. As a result, the strength of the entire fiber bundle is improved and the wear resistance can be improved.

  According to the present invention, in a woven belt and a seat belt device using the woven belt, the strength of the woven belt can be improved and the wear resistance can be improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following, an example in which the woven belt of the present invention is applied to the webbing of a seatbelt apparatus will be shown, and an embodiment of the entire configuration of a common seatbelt apparatus and an embodiment of a woven belt as a webbing used therefor will be described To do.
[Embodiment of seat belt device]
First, an embodiment of a seat belt device applicable to a woven belt will be described. FIG. 1 is a front view showing the entire structure of a seat belt device according to an embodiment of the present invention together with a passenger.

  In FIG. 1, a seat belt device 1 includes a seat belt 2 that is webbing, a retractor device 3 that winds one side of the seat belt 2 so that the seat belt 2 can be pulled out, and a tongue 4 that is slidably provided on the seat belt 2. And a buckle device 5 that engages with the tongue 4.

  The seat belt 2 is composed of a woven belt obtained by weaving a warp (first fiber bundle) extending in a substantially longitudinal direction as a webbing and a weft (second fiber bundle) extending in a substantially width direction, As described above, one side is taken up by the retractor device 3 and is passed through the shoulder anchor 6 on the way, and the other side end is rotatably connected to the vehicle body 8 side by the stopper 7.

  FIG. 2 is a longitudinal sectional view showing an example of the overall schematic structure of the retractor device 3.

  In FIG. 2, the retractor device 3 detects a frame 9, a spool 10 that winds up the seat belt 2, a torsion bar 11 made of a torsionally deformable material, and a large vehicle deceleration that occurs in an emergency. The deceleration detecting means 12 that operates as described above, the lock mechanism 13 that prevents the spool 10 from rotating at least in the belt drawing direction, the spring means 14 that includes a spiral spring, and the pre-actuated belt winding torque that operates in an emergency. A tensioner 15 and a bush 16 that transmits the seat belt winding torque of the pretensioner 15 to the spool 10 are provided.

  The lock mechanism 13 includes a locking base 18 that holds the pawl 17 in a swingable manner, and a lock gear 19. Since the lock gear 19 suffices with a well-known configuration, the detailed structure is not shown. However, the lock gear 19 rotates integrally with the torsion bar 11 in the normal state, and stops in response to the operation of the deceleration sensing means 12 in an emergency. A relative rotational difference is generated between the pawls 17 and the pawls 17 are engaged with the internal teeth 20 on the side walls of the frame 9. As a result, the rotation of the locking base 18 (in other words, the spool 10) in the seat belt pull-out direction is prevented. At this time, although detailed illustration is omitted, the locking base 18 of the locking mechanism 13 rotates relative to the lock gear 19 in the seat belt withdrawing direction even when the seat belt 2 is suddenly pulled out. This prevents the seat belt 2 from being pulled out in the same manner as described above.

  The torsion bar 11 is loosely arranged so as to penetrate in the axial direction on the inner peripheral side (specifically, the radial center side) of the spool 10. The torsion bar 11 is located on one side in the axial direction (left side in FIG. 2) and is engaged with one side in the axial direction of the spool 10 so as not to rotate relative to the other side in the axial direction of the spool 10; A torque transmitting portion 22 located on the other side in the axial direction (right side in FIG. 2) and engaged with the locking base 18 so as not to rotate relative thereto (in other words, supported by the locking base 18 so as to be integrally rotatable). The spool 10 and the lock mechanism 13 are connected in a rotational manner.

  The spool 10 includes a main body cylindrical portion 10a for winding the seat belt 2 and a large diameter cylindrical portion 10b having an outer diameter larger than that of the main body cylindrical portion 10a, and is rotatable between both side walls of the frame 9. It is supported by. The spool 10 is always attached in the seat belt winding direction via the bush 23, the torsion bar 11, the second torque transmission portion 21 of the torsion bar 11, and the bush 16 by the spring force of the spiral spring of the spring means 14. It is energized. As a result of such a structure, one side in the axial direction of the torsion bar 11 (left side in FIG. 2) is connected to the spool 10 so as to be integrally rotatable. Further, when the pretensioner 15 is operated, the belt winding torque generated in the pretensioner 15 is transmitted to the spool 10 via the bushing 16, whereby the spool 10 winds up the seat belt 2 by a predetermined amount.

  An annular relative rotation lock member 24 is disposed between the spool 10 and the shaft portion 18 a of the locking base 18. The relative rotation lock member 24 has a female screw (not shown) formed on the inner peripheral surface thereof and is screwed to a male screw (not shown) formed on the locking base shaft portion 18a. Are fitted so as to be relatively unrotatable and movable in the axial direction. When the spool 10 rotates relative to the locking base 18 in the belt drawing direction, the relative rotation lock member 24 rotates integrally with the spool 10 and moves to the right in FIG.

  Returning to FIG. 1, in the seat belt device 1 having the basic configuration as described above, the passenger 25 pulls out the seat belt 2 against the winding force from the retractor device 3, and is provided on the seat belt 2. The seat belt 2 is mounted by engaging the tongue 4 with the buckle device 5. This mounted state is shown by a one-dot chain line in FIG. As described above, the passenger 25 is wound around the chest and the lower abdomen by the seat belt 2, and as a result, is restrained by the seat 26.

  Here, the most characteristic point of the seat belt device having the above-described structure is that a fiber bundle including a medium contraction type yarn is used for at least one of the warp and the weft constituting the seat belt 2 (webbing), that is, the woven belt. It is a point.

Medium shrinkage type synthetic fiber yarn (for example, shrinkage rate of 15 to 20% in a curing condition of 210 ° C. for 180 seconds with a higher shrinkage rate than normal synthetic fiber yarn (for example, low shrinkage yarn having a shrinkage rate of 10% or less)) When the warp or weft is used, it is melted by the heat treatment and welded to the surrounding yarn to be strongly bonded, so that the strength of the entire fiber bundle can be improved. Further, by suppressing the shrinkage rate to be lower than the high shrinkage yarn of 20 to 60%, the yarn is difficult to shrink even when placed in a high temperature environment (the property of the yarn is difficult to change). As a result, the transportability during transportation is improved. In the seat belt device of the present embodiment, the strength of the fiber bundle of the woven belt is improved and the wear resistance is improved by using the medium contraction type synthetic fiber yarn as described above.
[Embodiment of woven belt]
Hereinafter, an embodiment of a woven belt of the present invention in which a weft yarn includes a medium contraction type synthetic fiber yarn will be described in detail.

  FIG. 3 is an external view of the woven belt of the present embodiment, and FIG. 4 is an enlarged side view of the woven belt of the present embodiment. In FIG. 3, the woven belt 101 according to the present embodiment is a belt-like cloth material that is long in the vertical direction in the drawing, and in the drawing, no member such as a tongue is attached to the end portion.

  Further, as shown in FIG. 4, a plurality of warps 102 extending in the substantially longitudinal direction and wefts 103 (shaded portions in the figure) extending in the substantially width direction are woven. The wefts are scanned in a straight line by reciprocating in the width direction of the weaving belt 101, and a plurality of warp yarns 102 cross between the parallelly arranged wefts 103 and are woven into a meandering shape. Yes.

  Each of the warp yarn 102 and the weft yarn 103 is a fiber bundle in which a plurality of single yarns 104 (filament, one yarn of the minimum unit) are bundled, and the warp yarn 102 is composed of a normal synthetic fiber yarn. Specifically, it is composed of a polymer of polyethylene terephthalate produced by an esterification reaction using terephthalic acid and ethylene glycol. On the other hand, the weft 103 is a synthetic fiber yarn made of polyester containing a medium shrinkage type synthetic fiber yarn. These consist of untwisted yarns entangled at constant intervals.

  FIGS. 5A to 5C are diagrams respectively showing examples of the cross-sectional structure of the weft 103 of the woven belt of this embodiment.

  5 (a), 5 (b), and 5 (c), each of the wefts 103 is about one third of the medium contraction type synthetic fiber yarn 204 among a plurality of single yarns constituting the weft 103. In addition, it is a fiber bundle of non-twisted yarn having a normal synthetic fiber yarn 205 as another single yarn.

  In the example of FIG. 5A, in the cross-sectional structure of the weft 103, the middle contraction type synthetic fiber yarn 204 is arranged in a bundle so as to be hardened on one side (right side in the figure), and on the other side (left side in the figure) The synthetic fiber yarn 205 is arranged in a bundle so as to be hardened. The middle-shrink type synthetic fiber yarn 204 in the figure is in a state after shrinkage, and before shrinkage, the one having a larger diameter than the normal synthetic fiber yarn 205 becomes the same diameter as the synthetic fiber yarn 205 by shrinkage. It is.

  In the example of FIG. 5 (b), in the cross-sectional structure of the weft 103, the middle contraction type synthetic fiber yarn 204 is arranged in a bundle so as to be hardened substantially at the center in the horizontal direction in the figure, and both sides thereof (the left side and the right side in the figure). In addition, normal synthetic fiber yarns 205 are arranged in a bundle evenly on the left and right. In this example, weaving is performed so as to eliminate the deviation (non-uniformity) in the horizontal direction shown in FIG.

  In the example of FIG. 5 (c), in the cross-sectional structure of the weft 103, the middle contraction type synthetic fiber yarns 204 are arranged in a bundle so as to be solidified substantially at the center of the illustrated upper, lower, left, and right sides, and the peripheral side (outer peripheral side) thereof. In addition, ordinary synthetic fiber yarns 205 are arranged in a bundle almost evenly. This example is an example in which weaving further proceeds from FIG. 5B so as to eliminate not only the horizontal direction but also the vertical direction deviation (non-uniformity).

  FIG. 6 is a cross-sectional perspective view showing an example of the structure of the middle contraction type synthetic fiber yarn 204. In FIG. 6, the middle shrinkable synthetic fiber yarn 204 has a configuration in which low melting point filament components 306 (30%) divided into needles are dispersed in a high melting point filament component 307 (70%).

  The middle shrinkage type synthetic fiber yarn 204 is typically made of a copolymer of polyethylene isophthalate and polyethylene terephthalate produced by an esterification reaction using ethylene glycol with terephthalic acid and isophthalic acid as raw materials. As shown, it has a configuration in which polyethylene isophthalate is dispersed in polyethylene terephthalate. That is, the middle shrinkable synthetic fiber yarn 204 is configured as a copolymer in which a high melting point filament component 307 made of high melting point polyethylene terephthalate and a low melting point filament component 306 made of low melting point polyethylene isophthalate are mixed. In the present embodiment, a fiber body in which the medium contraction type synthetic fiber yarn 204 (monofilament) is bundled, a so-called multifilament is used as a part of the weft. When the weaving belt 101 formed of such wefts is heated, the dispersed low-melting filament component 306 melts and the monofilament contracts, and the multifilament converges to become a monofilament and become hard. As a result, the cross-sectional area of the single yarn material after shrinkage of the weft is increased and hardened, and the rigidity of the entire woven belt is increased.

  In the middle shrinkable synthetic fiber yarn 204, the melting point becomes lower as the copolymerization ratio of polyethylene isophthalate, that is, the amount used is increased. For example, when the copolymerization ratio of polyethylene isophthalate is 10% (polyethylene terephthalate is 90%), the melting point is 230 ° C., and when the copolymerization ratio of polyethylene isophthalate is 30% (polyethylene terephthalate is 70%), the melting point A medium contraction type synthetic fiber yarn having a temperature of 160 ° C. is obtained. In the present embodiment, a medium shrinkage synthetic fiber yarn having a copolymerization ratio of isophthalic acid of 10% and a melting point of 230 ° C. is used.

  With the structure shown in FIG. 6, by performing heat treatment, the dispersed low-melting-point filament component 306 is melted, and a large welding action can be obtained as the whole single shrinkable synthetic fiber yarn 204.

  FIG. 7 is a flowchart showing the procedure of the heating process (heat setting process) of the medium contraction type synthetic fiber yarn 204. The weft 103 and the warp yarn 102 having the above-described configuration are woven (step S10), and a predetermined dyeing process (step S10). After performing S20) and the drying process (Step S30), for example, curing is performed at a temperature of 210 ° C. for 180 seconds and contracted (Step S40), whereby the medium contraction type synthetic fiber yarn 204 is contracted and thickened in the weft 103. The diameter is increased (see FIG. 5 above). Then, after cooling to predetermined temperature (step S50) and performing a cutting process (step S60) to a fixed size, a process is complete | finished through a packing process (step S70). As described above, when a fiber bundle is formed using the middle shrinkage type synthetic fiber yarn 204 having a higher shrinkage rate than that of a normal synthetic fiber yarn, the fiber bundle is melted by heat treatment and welded to the surrounding fiber yarn or fiber bundle. And bond strongly. As a result, the strength of the entire fiber bundle can be improved, and the wear resistance can be improved.

  On the other hand, the non-twisted yarn will be described below. 8A is an enlarged view of a portion of the weft 103 indicated by a broken-line circle in FIG. 8B, and FIG. 8B is a view showing the intersection of the weft 103 and the warp 102. As shown in (a), the entangled state 105 in the entangled state is provided at a predetermined interval, so that the state of the fiber bundle can be maintained without the single yarns 104 being decomposed. What is necessary is just to set the space | interval of this entanglement 105 suitably according to the thickness and number of single yarns. Although detailed enlarged illustration is omitted, like the weft 103, the warp yarns 102 are entangled in a tangled state at predetermined intervals. By using such a non-twisted yarn, the production cost is low because the number of twisting steps is unnecessary, and the fiber bundle is further improved in strength and wear resistance.

  As described above, according to the woven belt 101 of the present embodiment, the strength of the fiber bundle can be improved by using the middle shrinkage type synthetic fiber yarn 204 for the weft 103 as described above, so that the wear resistance is improved. Can be planned. In addition, the properties of the yarn are hardly changed even in a high temperature environment, and the transportability can be improved. At this time, in particular, when weaving the other fiber bundle to be woven with the weft 103 or the warp 102, the number of driving per one inch of the other fiber bundle to one fiber bundle is reduced to 20 or less. Since the meandering shape is moderated and the stress concentration in the curved portion is relieved, the strength can be improved also by this.

  In the present embodiment, in particular, the warp yarn 102 and the weft yarn 103 are provided with the entanglement 105, so that the strength and the wear resistance can be ensured without using an expensive twisted yarn. Therefore, the manufacturing cost can be reduced.

  Further, if the above-described strength improvement and wear resistance improvement effects are used and further applied, the number of fiber bundles of the weft 103 or the warp 102 can be reduced more than usual while the strength of the woven belt 101 is kept at a normal level. . For example, normally, in order to ensure the strength of the woven belt, as shown in FIG. 9A, a large number of wefts 103 must be driven at a narrow driving interval to increase the density of the entire woven belt. As shown in FIG. 9B, it is possible to ensure the strength of the woven belt 101 to a normal level even in a weaving configuration in which the number of wefts 103 is reduced to increase the driving interval and the number of warps is further reduced. . Thereby, the weight reduction of the whole woven belt 101 can be achieved by the thinned fiber bundle without reducing the strength.

  Further, in this application example, when the number of driving per inch of the other fiber bundle with respect to one fiber bundle of the weft 103 or the warp yarn 102 is reduced to 20 or less, as described above, the stress concentration in the curved portion is as described above. In particular, the strength of the warp yarn 102 can be maintained by reducing the number of driven wefts 103 even when the number of fiber bundles of the warp yarn 102 having a large lightening effect is reduced. it can. The reduction in the rigidity in the webbing substantially width direction due to the reduction in the number of wefts 103 can be compensated as usual by including the middle shrinkage type synthetic fiber yarn 204 in the wefts 103. There is also an effect that belt twisting, reversal, jamming and the like can be prevented and the drawing performance can be improved.

  In the present embodiment, the warp yarn 102 is a normal synthetic fiber yarn bundle, while the weft 103 is made of a medium contraction type synthetic fiber yarn 204 to increase the fiber bundle strength. The strength can be improved as compared with the case of using a normal fiber bundle.

  Depending on the weaving configuration, the weft 103 that is the second fiber bundle may be a fiber bundle of a normal synthetic fiber yarn, and the warp yarn 102 that is the first fiber bundle may be the medium shrinkable synthetic fiber yarn 204. Further, it is possible to use the middle shrinkage type synthetic fiber yarn 204 for both the weft 103 and the warp yarn 102, or it is effective as a configuration including the middle shrinkage type synthetic fiber yarn 204 only in a part of each. As for the non-twisted yarn, both the warp yarn 102 and the weft yarn 103 may be twisted yarns, or only one of the warp yarn 102 or the weft yarn 103 may be a twisted yarn.

  Although the description of the embodiments of the woven belt and the seat belt device of the present invention has been described above, the specific configuration of the above-described embodiments does not strictly limit the contents of the present invention, and the details of the present invention are not limited. Of course, various changes can be made according to the purpose. In particular, in each of the above-described embodiments, the example in which the woven belt is used for the webbing of the seat belt device used for a vehicle or the like has been mainly described. However, the use of the woven belt of the present invention is not limited thereto, and heavy objects such as building materials are used. It is suitable for application to general-purpose belts that are used for suspension or transportation such as safety belts and other body restraints such as safety belts and harnesses.

It is a front view showing the whole structure of a seatbelt device by one embodiment of the present invention with a passenger. It is a longitudinal section showing an example of the whole outline structure of a retractor device similarly. It is an external view of the woven belt by one Embodiment of this invention. It is an enlarged side view of the woven belt of the embodiment. It is a figure showing the example of the cross-sectional structure of the weft of the woven belt of embodiment similarly. It is a section perspective view showing an example of the structure of a middle contraction type synthetic fiber yarn. It is a flowchart showing the procedure of the heat processing (heat set process) of a middle shrinkable synthetic fiber yarn. In the woven belt, FIG. 8A is an enlarged view of a part of the non-twisted weft indicated by a broken-line circle in FIG. 8B, and FIG. 8B is an intersection of the weft and the warp. FIG. FIG. 9A is a side sectional view of a woven configuration of a normal woven belt, and FIG. 9B is a side sectional view of a woven configuration of the woven belt of the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seat belt apparatus 2 Seat belt 3 Retractor apparatus 4 Tongue 5 Buckle apparatus 101 Woven belt 102 Warp (first fiber bundle)
103 Weft (second fiber bundle)
104 Single yarn 105 Entangled 204 Medium shrinkage type synthetic fiber yarn

Claims (8)

A woven belt formed by weaving a first fiber bundle extending in a substantially longitudinal direction of a webbing and a second fiber bundle extending in a substantially width direction of the webbing,
At least one of the first fiber bundle and the second fiber bundle is a fiber bundle including a medium shrinkage type synthetic fiber yarn having a dimensional shrinkage ratio of 15% or more and 20% or less after shrinkage with respect to that before shrinkage. Weaving belt. The woven belt according to claim 1,
A woven belt, wherein the first fiber bundle is a fiber bundle containing a normal synthetic fiber yarn, and the second fiber bundle is a fiber bundle containing a medium contraction type synthetic fiber yarn. The woven belt according to claim 1 or 2,
The intermediate shrinkage type synthetic fiber yarn comprises a low melting point filament component having a relatively low melting point and a high melting point filament component having a relatively high melting point. The woven belt according to claim 3,
The intermediate shrinkable synthetic fiber yarn is a woven belt characterized in that the low melting filament component is dispersed in the high melting filament component. The woven belt according to claim 3 or 4,
The woven belt, wherein the high melting point filament component has a melting point of 250 ° C. or more and 260 ° C. or less, and the low melting point filament component has a melting point of 160 ° C. or more and less than 250 ° C. The woven belt according to any one of claims 1 to 5,
A weaving belt characterized in that, among the first fiber bundles or the second fiber bundles, the number of driving per one inch of the other fiber bundle with respect to one fiber bundle is 20 or less. The woven belt according to any one of claims 1 to 6,
A woven belt, wherein at least one of the first fiber bundle or the second fiber bundle is a fiber bundle provided with entanglement using untwisted yarn. A woven belt that restrains the passenger,
A winding device capable of winding the woven belt;
A buckle connected to the stationary member;
A tongue provided on the woven belt and engaged with the buckle;
The weaving belt is configured by weaving a first fiber bundle extending in a substantially longitudinal direction of webbing and a second fiber bundle extending in a substantially width direction of webbing, and the first fiber bundle and the second fiber bundle. A seatbelt device, wherein at least one of the fiber bundles is a fiber bundle containing a medium contraction type synthetic fiber yarn.

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